TY - BOOK ED - National Research Council (U.S.). ED - American Association of State Highway Officials. ED - United States. TI - Telecommunications systems for highway administration and operations T2 - National Cooperative Highway Research Program. Synthesis of highway practice 12 SN - 0309020158 AV - TE228.3 .N38 U1 - 388 PY - 1972/// CY - [Washington] KW - Highway communications N1 - "Project 20-5 FY '72."; "Research sponsored by the American Association of State Highway Officials in cooperation with the Federal Highway Administration."; Bibliography: p. 25-26 ER -